as you heard, president obama says whoever is responsible will be caught. major garrett is at the white house. good morning. >> reporter: good morning, charlie. overnight president obama was briefed by his top white house terrorism official on the criminal official and ongoing federal response. later today the president will meet again with fbi director robert mueller. white house officials tell us it's quite likely mr. obama will address the boston bombings later today although i must emphasize there's nothing official on the president's schedule. at the white house yesterday, mr. obama told the nation he would update them on any significant breaks in this case. >> you should anticipate that as we get more information, our teams will provide you briefings. we're still in the investigation stage at this point. i just want to reiterate we'll find out who did this and we will hold them accountable. >> reporter: and just a couple of hours the president will receive the presidential daily briefing. that is the global summary of all intelligence about threats to